< draft-songlee-aes-cmac-96-01.txt		draft-songlee-aes-cmac-96-02.txt >
	JunHyuk Song		JunHyuk Song
	Jicheol Lee		Jicheol Lee
	INTERNET DRAFT Samsung Electronics		INTERNET DRAFT Samsung Electronics
	Expires: November 24, 2005 May 25 2005		Expires: November 30, 2005 May 31 2005
	The AES-CMAC-96 Algorithm and its use with IPsec		The AES-CMAC-96 Algorithm and its use with IPsec
	draft-songlee-aes-cmac-96-01.txt		draft-songlee-aes-cmac-96-02.txt
	Status of This Memo		Status of This Memo
	By submitting this Internet-Draft, each author represents that any		By submitting this Internet-Draft, each author represents that any
	applicable patent or other IPR claims of which he or she is aware		applicable patent or other IPR claims of which he or she is aware
	have been or will be disclosed, and any of which he or she becomes		have been or will be disclosed, and any of which he or she becomes
	aware will be disclosed, in accordance with Section 6 of BCP 79.		aware will be disclosed, in accordance with Section 6 of BCP 79.
	Internet-Drafts are working documents of the Internet Engineering		Internet-Drafts are working documents of the Internet Engineering
	Task Force (IETF), its areas, and its working groups. Note that		Task Force (IETF), its areas, and its working groups. Note that
	skipping to change at page 3, line ? ¶		skipping to change at page 4, line 4 ¶
	CMAC Cipher-based MAC based on an approved symmetric key		CMAC Cipher-based MAC based on an approved symmetric key
	block cipher, such as the Advanced Encryption		block cipher, such as the Advanced Encryption
	Standard.		Standard.
	Key (K) 128-bits (16bytes) long key for AES-128 cipher block.		Key (K) 128-bits (16bytes) long key for AES-128 cipher block.
	Denoted by K.		Denoted by K.
	Message (M) Message to be authenticated.		Message (M) Message to be authenticated.
	Denoted by M.		Denoted by M.
	The total message M is denoted by sequence of M_i
	where M_i is the i'th block with size 128-bit.
	Message can be null message which means that the
	length of M is 0.
	Length (len) The length of message M in bytes.		Length (len) The length of message M in bytes.
	Denoted by len.		Denoted by len.
	Minimum value of the length can be 0. The maximum		Minimum value of the length can be 0. The maximum
	value of the length is not specified in this document.		value of the length is not specified in this document.
	truncate(T,l) Truncate T (MAC) in msb-first order with l bytes.		truncate(T,l) Truncate T (MAC) in msb-first order with l bytes.
	T The output of AES-CMAC-128.		T The output of AES-CMAC-128.
	skipping to change at page 5, line 16 ¶		skipping to change at page 5, line 16 ¶
	+ Algorithm AES-CMAC-96 +		+ Algorithm AES-CMAC-96 +
	+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++		+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
	+ +		+ +
	+ Input : K (128-bit Key described in section 4.1) +		+ Input : K (128-bit Key described in section 4.1) +
	+ : M ( message to be authenticated ) +		+ : M ( message to be authenticated ) +
	+ : len ( length of message in bytes ) +		+ : len ( length of message in bytes ) +
	+ Output : Truncated T (Truncated output with length 12 bytes) +		+ Output : Truncated T (Truncated output with length 12 bytes) +
	+ +		+ +
	+-------------------------------------------------------------------+		+-------------------------------------------------------------------+
	+ +		+ +
	+ Step 1. T := AES-CMAC-128 (K,M,len); +		+ Step 1. T := AES-CMAC (K,M,len); +
	+ Step 2. TT := truncate (T, 12); +		+ Step 2. TT := truncate (T, 12); +
	+ return TT; +		+ return TT; +
	+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++		+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
	Figure 1 Algorithm AES-CMAC-96		Figure 1 Algorithm AES-CMAC-96
	5. Test Vectors		5. Test Vectors
	These test cases same as defined in [NIST-CMAC] with one exception of		These test cases same as defined in [NIST-CMAC] with one exception of
	96 bits truncation		96 bits truncation
End of changes. 4 change blocks.
	7 lines changed or deleted		3 lines changed or added
This html diff was produced by rfcdiff 1.48. The latest version is available from http://tools.ietf.org/tools/rfcdiff/